Jig plunger



,- Feb. 6, 1924 4,444,705.

. R, W. RIGLER.

HG PLUNGER.

HLED SEPT.29. 1920. 4 SHEETS-SHEET1l gill '4055 .s /36 I I A314044140;

R. W. HIGLER.

JIG PLUNGER.

F|LEDsEPT,29,192o.

Feb. 6, 1923.

4 SHEETS-SHEET 2l Rfvv. RIGLER.

)IQPLUNGERl FILED SEPT.29, 1920.

Feb. 6, 1923.

v 4 SHEETSTSHEET 3- Wil ,w Wa., L

Feb. 6, 1923. 1,444,7@5

n. w. RIGLER. I

JIG PLUNGEH.

FILED sEPT.29. |920.

4 SHEETS-SHEET 4.

rea-.ieee ree. e, reas.

rrr i PENNSYLVAN it,

LPL'UNGER.

Application fried September 29, 192i..

To all whom t muy concern.'

Be it known that I, Riel-Inno W. Riemen, a citizen of the United States, residing at Pl'iiladelphia in the county of Philadelphia, and State of Pennsylvania, have invented certain new and useful improvements in Jig Plungers, oi which the following is a speciication.

rlhis invention relates to improved means for driving and guiding the plungers ot ore jigs and the like.

The invention resides in certain improvements in jig plungers of the type described and claimed in Patent No. 1,108,558, granted August .25, 1914, to Elmore and Croll. .in the structure of that patent the plunger is guided in part by guides carried by the plunger' drive shaft;` and the eccentric, eccentric rod and guides are housed in an oil retaining casing. TWhile the prior structure above mentioned was a marked improvement over devices which preceded it, practical experience has demonstrated the desirability of having the eccentric always accessible for inspection and repair; and the desirability oi guiding the plunger independently ci' the drive mechanism, and by means wholly beneath the drive shaft. The latter feature is particularly difficult to arrive at because of the large area of the plunger, the low head room usually available, the low ratio between length ot' connecting rod and length of stroke, and the difficult-y in maintaining the alinement of guides in the wooden tanks customarily used. This dithculty is increased where the plunger has a peripheral valve of the type disclosed in my prior Patent No. 938,307, issued October 2G, 1909, because the proper action of such valve is independent on a reasonably accurate guiding of the plunger.

The structure oi the present invention attains the desirable results above explained and provides a device which operates satis- 'factoriiy with a minimum oi attention. The guides are below and Wholly independent et the drive shaft, are capable of ready adjustment and are rigid when adjusted. The Wrist pin is thoroughly lubricated and is protected from water and grit. The eccentric and strap, are accessible at all times.

A practical embodiment of the invention Serial No. 413,459.

vits adjusted positions.

ii'ig. 5 is an enlarged fragmentary section ot a portion of the plunger, and ot the guide and guide-Way 6 a section on the line G- of Fig. 7 is a perspective view ot the giieide- Way.

lFig. 8 is a perspective view oit.' the guide.

Fig. 9 is a perspective view ot a portion, of the plunger flange, showing the seat in which the guide is adjustably mounted.

The wooden walls of the plunger-chamber ci an ordinary jig-tank are shown at 11. To protect against wear these have a metal lining` 12. heid by bind-strips 13. .it plunger 11i of lan'iinatcd Wood .1. onstruction works in this chamber, but is materially smaller' than. the inside dimensions of the chamber, to allow water to pass around the edges ot the plunger as the latter moves upward, a' nap-valve 15 prevents retlui; oi this water when the piunger moves downward, so that the downward movement of the plunger forces water through the jig screen (not shown), in the usual manner.

The iiap-valve 15 extends` around. all four sides ot the plunger, and is supported and limited in its movements by an oblique flange 16, which extends' downward and outward from a rectangular volcc 1T bolted to the top of the plunger 14. The yoke 17 can in one piece, and is :termed with tour seats 1S, each having a rear dange 19, and aside iiange 20.

@n leach of the four seats 18 is mounted a corresponding guide 21, the guides beingl opposed to each other in pairs, as is best shown in F ig. guide 21 Works in a corresponding' channel guide-way 22 bolted to the Walls 11 of the plunger-chamber, and

be cast its kaxf a assing through flange i?) andli lied by a licclr nut 2S.)

andtheupper opposed qui les of each-,pair are r a 29 having adjusting- To secure and inaintain parallel- Y@cent guides 2l. they are connected by tic rods 3l having adjust-ing nuts .The construction above described permits the parts be accurately alined and adjusterk and ensures the maintenance of such adjustment.

Mounted in hearings 33, and extending across the top or the plungenchanlber is the plunger driv -shaft 3d. This may be driven hy a pulley or by any other suitable means, and carries an eccentric for reciprocating the plunger A This eccentric is made up oit tivo relatively adjustable parts, an eccentric circular hub 3G, and an eccentrically bored rini 3'?, which niay be swiveled on the huh to vary the throw of the eccencric. The riin 37 and the huh 36 may be locked together in various adjusted relations by a taper pin 238, passed through a tapered hole offered by the registry of any two of tivo series ciA spaced complementary notches ornied in the contacting edges of the hub rnd rino. rlhe pinBS is held in place by a i sellated nut 39, and Cotter pin 40.

rllie riin 37 has peripheral lianges 4:1 tov retain the divided eccentric strap 49. rlhe parte o' this strap are held together hy studs and nuts indicated at d3, and the eccentric is lubricated by a grease-cup lll. he eccentric rod is integral `viththe lower haltet the strap, and has hushed Wristpin bearing d6 at its lower end.

The Wrist-pin bracket 47 is bolted to the upper tace of the plunger le? and is of special orin designed to maintain bath of oil around the Wrist-pin. lt includes a deep cup Ii-8, open at its tcp, and completely protected against the entrance of splashing Water hy a surrounding pendant skirt e9 formed on the rod 45.

The Wrist-pin 50 is inserted in a hole bored 'sugli the hase or the cup 18. rlhe pin is remned, and leakage oil cil troni the cup is prevented by the tapered threaded plugs @il may he added to the cup i8 through the iilling pipe vThe invention provides for the proper lubrication and protection of the Wrist-pin, and the proper .guiding ot the plunger. llt permits the adjustment oi? the guides and g leirays when necessary. The use ci relarively longV .idee and guidevrays7 which er;n tend well yabove the Wrishpin, precludes any ci .niping`v oithe plunger due to the lateral thrust ot the eccentric rod? and ensures the per unctioning of the Klap valve on all sides of theplui ger and at all times. All hearings are always accessible for inspection and repair without the necessity of elabcrate disniounting operations. rlhis is particularly important in the case of the Wristpin bearing.

Since an eccentric is merely a specific type olf crank in which the radius of the crank pin bearing greater than the radius of the crank, l use the terni crank as a generic terni to include eccentrics and other cranks. Various types oit cranks are used in this art, but the eccentric has advantages arising from the large hearing surface and the readiness with which the thror7 may he changed as described above.

'lllhat is claimed is l.. The combination o a 31g plunger; a

driving shaft mounted above said plungerg a crank carried by said shaft; a connecting rod connected to said crank; a Wrist pin connecting said connecting rod and said plunger; a cup mounted on said plunger and serving to retain a bath of oil around said Wrist pin; a skirt mounted on said connecting rod and housing the upper margin. of said cup; and means for guiding said plunger.

2. The combination of a jig plunger; a driving shaft niounted alcove said plunger; a crank carried hy said shalt; a connecting rod connected to said crank; a Wrist pin connesting said connecting rod and saidplunger; a cup inounted on said plunger and serving to retain a bath of oil around said Wrist pin; a skirt mounted on said connecting rod and housing the upper margin of said cup; gi'iides for said plunger mounted below said driving shaft; and coacting guides on said plunger extending above and below said wrist pin.

ln testimony whereof l have signed my name to this specilication.

RlCHARD `W. RGLER. 

